Anonymous
Anonymous asked in Social ScienceAnthropology · 1 month ago

Human evolution occurred predominately along the African Rift Valley True or False?

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  • 3 weeks ago

    False. Human evolution is still happening, all over the world.

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  • CRR
    Lv 7
    1 month ago

    Probably false. There are some fossils from that area that are claimed to be human ancestors but the actual evidence is far from convincing. Australopithicenes are probably just the remains of a species of ape, of which there are plenty in Africa.

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  • Anonymous
    1 month ago

    We do not know the answer to this. There are fossils there and that was a popular hypothesis, but there are new, older fossils in South and West Africa.

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  • Anonymous
    1 month ago

    It seems that way. Many of the transitional fossils have been found in that particular area but not elsewhere. However, after the appearance of Homo erectus, which is the first species to migrate out of Africa, hominid evolution has happened outside of Africa. Neanderthals and the Hobbit (Homo floresiensis) evolved in Europe and Asia respectively. Also, after humans migrated out of Africa 60,000 years ago, Europeans, Asians and other non-Africans (e.g. Eskimos, Native Americans, Polynesians) have evolved outside of Africa, while populations in Africa have not changed as much during the same time span.

    • JimZ
      Lv 7
      1 month agoReport

      "Humans" migrated out of Africa 60K years ago.  News flash:  Humans lived in Africa long before and after that.  

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  • JimZ
    Lv 7
    1 month ago

    The Rift Valley has rocks of the right age exposed.  That is all.  It seems to be very unlikely that it is where human evolution occurred "predominantly".  It is a poorly worded question because "human" is not well defined.  If human means Homo sapiens, then it is probably false IMO.  If it means our genus, then it become a maybe.  If it means any homonid (our branch from the last common ancestor with chimps) then it is very doubtful.  I would say false but it isn't known for certain either way which makes it false.  The problem is some people are foolish enough to believe it is true.  

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  • 1 month ago

    Probably, but we also know the fossil record is biased by the climates:

    Dryer East-African climate preserves fossils quite well when they rotten in West-African rainforests.

    Toumai was unearthed 2500 km west of the Great Rift.

    This discovery refuted the East-Side Story, the previous model that stated hominization occurred in the East only. Lower vegetation was the main cause of upright walking.

    Toumai walked upright in the West. He's the proof some stages of human evolution did occur in central Africa too. we just miss some more fossils.

    • CRR
      Lv 7
      1 month agoReport

      Sahelanthropus, was announced in 2002, based mainly on a partial cranium, nicknamed Toumaï, discovered in northern Chad. A partial cranium!?

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